CN100506478C - Four-shaft numerically controlled ellipsoidal and spherical hobbing cutter spade milling machine tool - Google Patents
Four-shaft numerically controlled ellipsoidal and spherical hobbing cutter spade milling machine tool Download PDFInfo
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- CN100506478C CN100506478C CNB200710062553XA CN200710062553A CN100506478C CN 100506478 C CN100506478 C CN 100506478C CN B200710062553X A CNB200710062553X A CN B200710062553XA CN 200710062553 A CN200710062553 A CN 200710062553A CN 100506478 C CN100506478 C CN 100506478C
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- knife rest
- servomotor
- machine tool
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- ellipsoidal
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Abstract
The invention discloses a 4-axis nc relief grinding machine tool for ellipsoidal and spherical hobs, which is characterized in that: a machine bed(3) is provided with an arc adjusting plate(11) whose position can be adjusted and a rotary plate(19) that can rotate around a rotary shaft(18) fixed on the arc adjusting plate(11).The rotary plate(19) is sequentially provided with a radial feeding knife frame(22), a tangential feeding knife frame(15) and a cutter from the lower part to the higher part. The rotary shaft (18) is perpendicular to the central lines of a spindle box (1) and a tailstock (2). An arc rolling guiding rail (23) is arranged between the rotary plate (19) and the arc adjusting plate (11). The lower parts of the radial feeding knife frame (22) and the tangential feeding knife frame (15) are respectively provided with a straight line rolling guiding rail (21). With the proposal adopted, the special machine tool for processing spherical and ellipsoidal internal gear hobs is provided, which solves the problems that the cutters of large diameters are difficult to be processed with difficult processing and low precision.
Description
Technical field
The present invention relates to a kind of four-shaft numerically controlled ellipsoidal and spherical hobbing cutter spade milling machine tool, especially a kind of lathe of processing elliposoidal and spherical gear hob.
Technical background
Gear shaping is the present the most frequently used method with the generating principle machining interal.Spherical hobbing cutter designs with regard to the principle that is based on the pinion cutter machining interal, it is a kind of generating tool, a hobboing cutter can be processed straight-tooth or the helical teeth big internal gear that the number of teeth is different with modulus, hobboing cutter is that the profile of tooth of processing work was constant after the teeth structure was refaced, have advantages such as the high long service life versatility of machining accuracy is good, spherical hobbing cutter is an ideal cutter in the present big internal gear Roll-turning tool.But be not that major diameter lathe more than 400 millimeters does not also have also now, and realize that relief grinding and multi-shaft interlocked lathe equally do not have yet with the special purpose machine tool, particularly tool diameter of processing sphere or elliposoidal helicoid.
Make elliposoidal hobboing cutter and spherical hobbing cutter last also be that the operation of most critical is the relief grinding of hobboing cutter, utilizing the relieving lathe after repacking used when making spherical hobbing cutter to come relief grinding elliposoidal hobboing cutter has been impossible.Because the centre of gyration position of relieving lathe knife rest is fixed, can not move, just, can only process spherical hobbing cutter with the machine tool chief axis vertical and intersectant centerline.Common relieving lathe is the complete mechanical transmission simultaneously, can't revise when the normal pitch of hobboing cutter is overproof.
Summary of the invention
Low in order to solve in the present lathe ubiquitous processing difficulties, precision for sphere and elliposoidal hobboing cutter, and the problem that large diameter cutter is difficult to process, the invention provides a kind of novel four-shaft numerically controlled ellipsoidal and spherical hobbing cutter spade milling machine tool, it can address the above problem effectively.
A kind of four-shaft numerically controlled ellipsoidal and spherical hobbing cutter spade milling machine tool, comprise main spindle box, tailstock and lathe bed, it is characterized in that: the adjustable accent arc plate in position is installed on the described lathe bed and can radial feed knife rest, tangential admission knife rest and cutter be installed successively on the described rotor plate from low to high around the rotor plate that is fixed in the turning cylinder rotation of transferring on the arc plate; Described turning cylinder is equipped with the circular arc rolling guide perpendicular to the center line of main spindle box and tailstock between rotor plate and the accent arc plate, and described radial feed knife rest and tangential admission knife rest below are separately installed with linear rolling track; Described rotor plate is equipped with worm gear, on the described accent arc plate first servomotor is installed, and first servomotor links to each other with worm screw by shaft coupling, the worm and wheel engagement; In the described main spindle box gear is arranged, it is connected by first synchronous cog belt with second servomotor; Described radial feed knife rest is connected with first ball-screw, and first ball-screw is connected by second synchronous cog belt with the 3rd servomotor; Described tangential admission knife rest is connected with second ball-screw, and second ball-screw is connected by the 3rd synchronous cog belt with the 4th servomotor.
Adopt this kind scheme, solved the problem that sphere and elliposoidal hobboing cutter are made.Simultaneously owing to adopted numerical control relief-grinding, revised the theoretical pitch error of hobboing cutter, improved the accuracy of manufacture of hobboing cutter,, can satisfy the manufacturing requirement that current all big modulus internal gears are processed needed hobboing cutter because it is high and strengthened the radius of gyration of circular cutter holder to have raised the center of lathe.
Description of drawings
Below in conjunction with accompanying drawing the specific embodiment of the present invention is described in further detail.
Fig. 1 is the front view of four-shaft numerically controlled ellipsoidal and spherical hobbing cutter spade milling machine tool;
Fig. 2 is the vertical view of four-shaft numerically controlled ellipsoidal and spherical hobbing cutter spade milling machine tool;
Fig. 3 is the left view of four-shaft numerically controlled ellipsoidal and spherical hobbing cutter spade milling machine tool;
Fig. 4 is the cutaway view of ellipsoidal ring gear hob.
The specific embodiment
For solving sphere and elliposoidal hobboing cutter manufacturing issue, the present invention develops the processing unit (plant)-four-shaft numerically controlled ellipsoidal hobboing cutter and the spherical hobbing cutter spade milling machine tool of an elliposoidal hobboing cutter, shown in Fig. 1,2 and 3.It comprises main spindle box 1, tailstock 2 and lathe bed 3, wherein, the adjustable accent arc plate in position 11 is installed on the lathe bed 3 and can radial feed knife rest 22, tangential admission knife rest 15 and cutter be installed successively on the rotor plate 19 from low to high around the rotor plate 19 that is fixed in turning cylinder 18 rotations of transferring on the arc plate 11; Turning cylinder 18 is perpendicular to main shaft, and by 23 supportings of circular arc rolling guide, radial feed knife rest 22 and tangential admission knife rest 15 are respectively by linear rolling track 21 supportings between rotor plate 19 and the accent arc plate 11.Rotor plate 19 is equipped with worm gear 7, transfer be equipped with on the arc plate 11 first servomotor, 10, the first servomotors 10 by shaft coupling 9, drive worm screw 8 and worm gear 7, rotor plate 19 moving axis 18 that rotates is rotated.Main shaft is rotated by the gear driven in first synchronous cog belt 4 and the main spindle box by second servomotor 5.Radial feed knife rest 22 is driven by second synchronous cog belt 16 and first ball-screw 20 by the 3rd servomotor 17 and does radial feed.Tangential admission knife rest 15 is done tangential admission by the 4th servomotor 13 by the 3rd synchronous cog belt 12 and 14 drives of second ball-screw.
The principal character of this lathe is: having a center of rotation can promptly transfer the arc plate along the fan-shaped circular cutter holder that moves perpendicular to the spindle centerline direction, this fan-shaped circular cutter holder is at the bottom, so this lathe is an essential characteristic to process sphere or ellipsoid and helix thereof.Being the radial feed knife rest above the circular cutter holder, is the tangential admission knife rest on it.Above-mentioned three knife rests are driven by three servomotors respectively.
During work, the hobboing cutter blank is installed on the machine tool chief axis by axle, and right-hand member should be adjusted axial location by tailstock 2 conical sliding supports when hobboing cutter is installed, and makes the centre of gyration of the medium line of hobboing cutter blank by knife rest.Adjust to transfer arc plate 11, turning cylinder 18 on it is moved to apart from the distance at machine tool chief axis center be the L value among Fig. 4, locking accent arc plate 11 then.After hobboing cutter blank and each knife rest are grouped into initial position, are installed in the tool feeding of each knife rest and start working, its movement relation is guaranteed by digital control system.Machine tool chief axis is driven by second servomotor, and when machine tool chief axis rotated together with processed hobboing cutter, it is fixed than rotating that knife rest is pressed around its center by worm screw 8 worm gears 7 by 10 drives of first servomotor, just can process the ellipsoid helicoid.The elliposoidal hobboing cutter is because diameter has reduced, and the angle of spiral of hobboing cutter increases, and the normal pitch error of hobboing cutter increases.This machine adopted is four-shaft numerically controlled, by changing the instantaneous angular velocity of circular cutter holder, realizes cutter shaft to the change tooth pitch, and tooth pitches such as normal direction, thereby reduce theoretical error, improved the accuracy of manufacture of hobboing cutter.This lathe radially with tangential admission knife rest 22,15 can finish hobboing cutter radially and tangential relief grinding.During relief grinding, use formed grinding wheel, the axial profile of emery wheel is by the hobboing cutter axial tooth profile coordinate correction of the flank shape that provides among Fig. 4.
Because finish the overall process of a hobbing cutter spade milling, circular cutter holder is wanted reciprocating rotating tens times, for avoiding the influence in gap between the worm and worm wheel, and take each stroke to be over, all return zero-bit, the way that next stroke is begun by zero-bit again.
This lathe designs in order to make big modulus elliposoidal and spherical hobbing cutter, consider the actual demand of at present existing modulus 28 hobboing cutters, therefore improve the center of the lathe radius of gyration high and that strengthened circular cutter holder and can make modulus 30mm, diameter reaches the hobboing cutter of 600mm, can satisfy the manufacturing requirement that current all big modulus internal gears are processed needed hobboing cutter.
Claims (1)
1, a kind of four-shaft numerically controlled ellipsoidal and spherical hobbing cutter spade milling machine tool, comprise main spindle box (1), tailstock (2) and lathe bed (3), it is characterized in that: the adjustable accent arc plate (11) in position is installed on the described lathe bed (3) and can radial feed knife rest (22), tangential admission knife rest (15) and cutter be installed successively on the described rotor plate (19) from low to high around the rotor plate (19) that is fixed in turning cylinder (18) rotation of transferring on the arc plate (11); Described turning cylinder (18) is perpendicular to the center line of main spindle box (1) and tailstock (2), between rotor plate (19) and the accent arc plate (11) circular arc rolling guide (23) is installed, described radial feed knife rest (22) and tangential admission knife rest (15) below are separately installed with linear rolling track (21); Described rotor plate (19) is equipped with worm gear (7), and first servomotor (10) is installed on the described accent arc plate (11), and first servomotor (10) links to each other with worm screw (8) by shaft coupling (9), worm screw (8) and worm gear (7) engagement; Described main spindle box has gear in (1), and it is connected by first synchronous cog belt (4) with second servomotor (5); Described radial feed knife rest (22) is connected with first ball-screw (20), and first ball-screw (20) is connected by second synchronous cog belt (16) with the 3rd servomotor (17); Described tangential admission knife rest (15) is connected with second ball-screw (14), and second ball-screw (14) is connected by the 3rd synchronous cog belt (12) with the 4th servomotor (13).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB200710062553XA CN100506478C (en) | 2007-08-08 | 2007-08-08 | Four-shaft numerically controlled ellipsoidal and spherical hobbing cutter spade milling machine tool |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB200710062553XA CN100506478C (en) | 2007-08-08 | 2007-08-08 | Four-shaft numerically controlled ellipsoidal and spherical hobbing cutter spade milling machine tool |
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| Publication Number | Publication Date |
|---|---|
| CN101104245A CN101104245A (en) | 2008-01-16 |
| CN100506478C true CN100506478C (en) | 2009-07-01 |
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| Application Number | Title | Priority Date | Filing Date |
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| CNB200710062553XA Expired - Fee Related CN100506478C (en) | 2007-08-08 | 2007-08-08 | Four-shaft numerically controlled ellipsoidal and spherical hobbing cutter spade milling machine tool |
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Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102794691A (en) * | 2012-08-29 | 2012-11-28 | 厦门大学 | Four-axis numerical-control device for grinding curved surface |
| CN103481131A (en) * | 2013-09-30 | 2014-01-01 | 平湖市山特螺纹工具有限公司 | Compensation mechanism oil cylinder spring pull ring of screw tap relief grinding machine |
| CN103481128A (en) * | 2013-09-30 | 2014-01-01 | 平湖市山特螺纹工具有限公司 | Longitudinal tool carrier of screw tap relief grinding machine |
| CN106180910A (en) * | 2016-08-05 | 2016-12-07 | 西北工业大学 | One face gear inserted-blade type elliptical spherical hob and processing technique thereof |
| CN107322059B (en) * | 2017-07-05 | 2019-02-15 | 中国农业大学 | Enveloping worm hob CAD/CAM approach based on universal numerical control milling machine |
| CN113001265B (en) * | 2021-03-18 | 2022-03-22 | 常州机电职业技术学院 | Method for determining grinding wheel parameters of tool grinder for grinding spiral groove hob |
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- 2007-08-08 CN CNB200710062553XA patent/CN100506478C/en not_active Expired - Fee Related
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| CN101104245A (en) | 2008-01-16 |
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Granted publication date: 20090701 Termination date: 20120808 |